class_docstr: The IOB tagger used by the chunk parser.
code: def _english_wordlist(self):
      try:
          wl = self._en_wordlist
      except AttributeError:
          from nltk.corpus import words
  
          self._en_wordlist = set(words.words("en-basic"))
          wl = self._en_wordlist
      return wl
  
imports: import os
  import pickle
  import re
  from xml.etree import ElementTree
  from nltk.tag import ClassifierBasedTagger, pos_tag
  from nltk.chunk.api import ChunkParserI
  from nltk.chunk.util import ChunkScore
  from nltk.data import find
  from nltk.tokenize import word_tokenize
  from nltk.tree import Tree
label_desc: Use image node_id 3 for calling the NEChunkParserTagger obj's underlying member method code with example usage: obj._english_wordlist() and returns: wl